gage block

noun

Definition of gage block 

: a hardened steel block that is used by machinists for extremely accurate measurement and has two opposite surfaces ground and lapped plane and parallel to a thickness within a few millionths of an inch of its designated size and usually forms one of a graduated set of which two or more are often used in combination

called also precision block, size block

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Gagarin

gage

Gage

gage block

gage green

gageite

gage plate

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